Combine



"Dec,y 5, 1944. A. w.4 oEHLER COMBINE Filed April 13. 1942 INN INVENTORAlvin W. Oehler DED Patented Dec. 5, 1944 COMBINE Alvin W. Oehler,Moline, Ill. assignor to Deere 2:l Company, Moline, Ill., a corporationof Illinois Application April 13, 1942, Serial No. 438,861 s claims.lv(c1. 56122 The present invention relates to combined harvesting andthreshing machines of the type having a longitudinal main framesupporting the threshing mechanism and a laterally extending secondaryframe upon which the harvesting Figure 1 is a fragmentary plan View of a`com` bined harvester and thresher, showing the parts affected by myinvention;

Figure 2 is a detail view, partly in cross section, taken substantiallyin the plane of line 2-2 of Figure 1;

Figure 3 is a detail View of the front end of one of the truss members,taken on the line 3 3 of Figure 1 and showing the means by which it y isadjustably attached to a supporting arm; and

Figure 4 is a cross-sectional view, taken on the line 4-4 of Figure 1,showing the means for suspending the rear end of the aforementionedtruss member and for adjusting it to raise and lower the other trussmember.

Referring now to the drawingQthe thresher part, represented by thenumeral 8, is disposed longitudinally of the implement and is mounted ona main frame 1 having a transverse supporting beam 8 extending laterallytherefrom, and supported on transversely spaced wheels, one of which isshown at 9.

The harvesting unit II comprises a secondary frame platform I2, whichincludes transverse frame barsI3a'nd I4 connected by cross bars I5, I6and I1. The platform I2 is supported on a pair of spaced arms I8 and I9which are fixed, at their forward ends,- tobars" I and I 6,respectively, and extend rearwardly to axially aligned pivotalconnections 2I and 22 of the main frame of the implement. The arm I8 isformed of an angle iron member arranged with one web in a vertical planeand the other web in a horizontal plane. The arm I9 includes two angleiron members Isa and I9b arranged in overlapping relation and welded orotherwise secured to gether' and forming, in effect, an inverted channelmember, and is pivotally supported by the bolt 22 on an angle ironbracket 23, which is rigidly mounted on `the frame member Badjacent thewheel 9. 5 y v The platform I2ext`ends outwardly laterally beyond thearm I9 and is braced against rearward thrust by a brace 2B disposedbetween the arm IB and the frame member I3. The brace 26 islongitudinally adjustable and comprises a tubular member 21 which isthreaded internally at one end to receive an eyebolt 28. The front endof the brace 28 is connected to the frame member I3 by a bolt 29, and abolt 38 extends through the eye in eyebolt 28 and through an openingprovided in the arm I9 slightly forward of the pivot 22. The threadedconnection of the eyebolt 28 with the member 21 permits adjusting thebrace 26 to the proper length tohold the platform I2 forwardly to thedesired working positon. It isalso necessary that the platform I2 bemaintained in a level horizontal position so that the cutting-mechanismmounted along the front edge of the platform (not shown in the drawing)will cut the full swath of material at a uniform height. To accomplishthis a truss member 3I is provided between the outer end of the platformand the arm I8. The truss member 3| includes an upper arch bar 32 and alower arch bar 33. The front ends of the bars 32 and 33 converge and arerigidly secured to the frame bar I4 of the platform I2 by bolts V40. Thetruss 3l extends diagonally rearwardly and the rear ends converge to arigid connnection with a plate 34 which is fixed on the arm I8 adjacentthe pivot 2|. A truss member 36 is arranged at anv acute angle to thetruss member 3I and extends through the arched center thereof. Bolts 35extend 1through corresponding upper and lower members of the trusses,serving to hold the trusses in rigid relation. The member 36 comprisesan upper bar 31.and a lower bar 38.; A vertical spacer 39 is providedvin the central arched portion ofthe trussv 36. The forward ends of bars31 and 38 converge and are secured to a vertical plate lll.` The plate4I is provided with a plurality of uniformly spaced holes 42, which areadapted to selectively receive bolts 43 provided in a bracket 44 securedon the front end of arm I8. The rear end of bars 31 and 33 convergeandare welded together and to a vertically disposedsleeve 45 (see Figures 2and 4); The sleeve 45 receives a bolt 46 which extends upwardly .throughanother sleeve 41 xed on the side 'of member I9. An adjusting nut 48 isprovided on the upper end of the bolt 46 to hold the bolt in the desiredposition of adjustment.

To level the platform I2, the truss member 36 is raised or lowered byturning nut 48 in one direction or the other. The truss member 36 acts,in effect, as a lever to raise or lower the truss member 3l vwhichraises and lowers the outer end of the platform I2, transferring theweight thereof to'sthearms IB,` I9.. If suiicient adjustmentto level the'platform-issnot obtained through the range of adjustment furnished bythe bolt 46 and nut 48, additional adjustment" can be obtained at thefront end of the truss" 36 by shifting the plate 4| vertically withbolts 43 removed, and replacing the. latter through others of the holes42 in the plate 4l.

It will be evident from the-foregoing descrip tion that the trussmembers employed, form a rigid support for the platform andalso'provide" means whereby the rplatform .may be easily and quicklyadjusted. to'bringv it.` into. a, level. horizontal. position.

What II .claimis:

1. In a machine of the characterdescribed, a main frame, a secondaryframe, armsxedto said secondary `frame,` and pivotally connected withthe mainframe, rigidlyy connectedy crossed trusses having theirA endsconnectedI with `the armsand with said secondary frame, and an adjustingmeansbetween one endoi oneI truss member and one-of saidarmsforadjusting the vertical position of. said oneend relative to said one armto-raisefand-lower. the otheritrussfrela.- tive 'tothe ground: toteffect leveling of the. secondary' frame.'

2-.. In. a machine of. theV character described, a mainframe,.af-harvestingv plat-form, a'. pair vof horizontally spaced armsconnected at their-front ,ends tosaid-platformL the: rstn arm'being con?nected adjacent the inner end of saidplatform, the second arm beingconnected. between the ends of the platform, said arms being pivotallyconnected at ltheirrear ends: to'said main frame forivertical swingingwhereby said platfonnamay befraised and loweredrelative to'saidImainframe by vertically swingingsaidiarms; a; pair ofcrossed truss-members, the .rst of said members. being connected at its rearzend: to.said rstvarm: adjacentI the rear end of. the-letterand at itsl frontendk toi'the outer end of said platform, the second member. .beingconnected Iat its- `front' end to. said rst arm adjacent the. front endof the latter, and vmeans connectingy the `rear end of saidsecond membertosaid second arm adjacent the rear en'd of. thelatter, said meansincluding means for adjusting 'the vertical portion of said secondmember relative tosaid second' arm to raise and lower the other trussbodily, to level the o`uter end; of the platform.

3. In a machine of the character described, a main frame, agsecondaryframe pivotallymounted' onsaid mainframe on two spaced pivots, a rigidtruss memberV connected'. at its inner end to said secondaryy frameadjacent one of said and lower said opposite end of' said secondaryframe.

4. In a machine of the character described, a main frame, a secondaryframe, a pair of arms fixed to said secondary frame and pivotallyconnected with said main frame, a pair of crossed trusses, one of saidtruss members disposed diagonally of the machine and connected at itsinner end with the main frame and at its outer endv with the secondaryframe, the other truss member disposed diagonally of the machine andsecured to said arms, either end of said other `truss member beingadjustable to raise or lower `.the first truss member.

5. In a machine of the character described, a

main frame, 'a secondary frame, a pair of truss memberssupporting theouter end of said secondary frame,;and:-.means for adjusting both endsof one truss member selectively so as to raise and lower one end of ytheother truss member toraiseand lowerA the outer` endof said secondaryframe.

6. In a `machine of. thecharacter described, a mainframe, a secondaryframe, a pair .ofarms fixed `to said., secondary frame and, pivotally--con.- nected with said main frame, a pair of interconnected crossedtrusses, onel ofasaid trusses disposeddiagonally` of` the-,machine andconnected at itsinner endwiththeimainframeand at its cuter. end.withthesecondary frame, the.other vtruss disposed.. diagonallyoppositely of the ma- .chineand fixed atl itsfront `end. to; one yofsaid arms and suspendingly secured at its rear end to..t e .other arm,and. means.- for r adjusting said rear. end. of .saidlast named truss soas toraise and. lowerone end of the other truss tol raise andlower theouter. endof said secondaryv frame.

7.. In a .machine of the character described, a main frame, a secondaryframe, a pair ofY arms fixed tosaidsecondary. frame and pivotallyconnected with saidfmain'framaa, rigid truss member supporting theouter-.end of said secondary frame, anda lever rigidly secured atonefend. to one=of said arms andadjustable;vertically relative thereto,the other end of said -lever being suspendingly supported on the otherarm and adjustable vertically relativeto the; latter, said truss memberhaving. its intermediate portion carried onthe intermediate portion ofsaid lever;

8. In. a machine ;of ,the character described; a main. frame, asecondary frame,.a pair of arms xed to saidsecondary frame-and pivotallycon nectedwith said ,main frame, a pair of Vinterconnected crossedtrusses, one of saidy trusses disposed diagonally -of themachine andconnected at its inner end. with the main lframe and atitszouterend-with the secondary frame, the other truss-disposeddiagonally oppositely of the machine andmounted `at its front end on oneof said arms and suspendingly secured at itsl rear end to the other arm,and means for vertically adjusting saidrear endof said lastnamed trussso. .as to .raise land lower one Vendl of the other truss .to v.raise.and lower. the outer endV of .said secondary frame. the front. end of.said ylast namedtrussalso beingvertically adjustable relative to theassociated arm to, change the range of adjustment'effected by adjustingIthe rear endl thereof. Y

ALVIN W. OEHLER.

